I did not see how this is sitting on top of each other? Is there a pad that fill this gap? Even if there is a pad. It might not have reload that hold it down. View attachment 3868488
The hinge to the center grafity of the spare tires give pretty long leverage. Any play in on the bearing and it would move a lot more at the tire.
Normally the middle part become the second point and reduce the leverage from the tire.
I see what you mean. There is a pad underneath: